AuthenticationHeaderValue Represents authentication information in Authorization, ProxyAuthorization, WWW-Authneticate, and Proxy-Authenticate header values.

 CacheControlHeaderValue Represents the value of the Cache-Control header.

 ContentDispositionHeaderValue

 ContentRangeHeaderValue Represents the value of the Content-Range header.

 EntityTagHeaderValue Represents an entity-tag header value.

 HttpContentHeaders Represents the collection of Content Headers as defined in RFC 2616.

 HttpHeaderValueCollection`1 Represents a collection of header values.

 HttpRequestHeaders Represents the collection of Request Headers as defined in RFC 2616.

 HttpResponseHeaders Represents the collection of Response Headers as defined in RFC 2616.

 MediaTypeHeaderValue Represents a media-type as defined in the RFC 2616.

 MediaTypeWithQualityHeaderValue Represents a content-type header value with an additional quality.

 NameValueHeaderValue Represents a name/value pair.

 NameValueWithParametersHeaderValue Represents a name/value pair with parameters.

 ProductHeaderValue Represents a product header value.

 ProductInfoHeaderValue Represents a value which can either be a product or a comment.

 RangeConditionHeaderValue Represents a header value which can either be a date/time or an entity-tag value.

 RangeHeaderValue Represents the value of the Range header.

 RangeItemHeaderValue Represents a byte-range header value.

 RetryConditionHeaderValue Represents a header value which can either be a date/time or a timespan value.

 StringWithQualityHeaderValue Represents a string header value with an optional quality.

 TransferCodingHeaderValue Represents a transfer-coding header value.

 TransferCodingWithQualityHeaderValue Represents a transfer-coding header value with optional quality.

 ViaHeaderValue Represents the value of a Via header.

 WarningHeaderValue Represents a warning value used by the Warning header.

 HttpHeaders A collection of headers and their values as defined in RFC 2616.